What word means a nobleman or to look intently?

A No. 1 hit in March 1976, which Four Seasons song is subtitled "Oh, What a Night"? Complete the name of Train's 2001 top-5 hit: "Drops of..."? Which noble gas has atomic number 10? Which noble Moor in the service of Venice is the title character of a Shakespeare tragedy? A noisy office registers about 60 of which units of sound level? What word means a noisy outburst, or a steady wind of about 32 to 63 mph? Which word describes a non-Jew, or to Mormons, a non-Mormon? What is a non-rigid airship called?